Construct a 45 Degree Angle

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Create a 45-degree angle without bisecting an angle. A video shows a method to construct a 45-degree angle without needing to bisect a right angle. By constructing an isosceles right triangle, the presenter constructs a 45-degree angle in the process.

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CCSS: Adaptable
Instructional Ideas

  • Ask pupils to find another method to construct a 45-degree angle
Classroom Considerations

  • Assumes the class is knowledgeable about the properties of isosceles right triangles
  • The worksheets cover construction of multiple angle measurements
Pros

  • Provides an opportunity to practice the skill
  • Answer keys show construction marks
Cons

  • None
Common Core